Architecting Angular Applications with Redux, RxJS, and NgRx

Action – capture the intent

An action is something as simple as an intent with accompanying data, that is, a message. How does an action come about though? An action comes about when a user interacts with a UI. The user may select a specific item in a list or a press a button with the intention of submitting a form. Submitting the form should, in turn, lead to a product being created.

Let's look at two different actions:

• Selecting an item in a list, here we are interested in saving the index of our selected item
• Saving a todo to a todo list

An action is represented by an object. The object has two properties of interest:

• The type: This is a unique string that tells us the intention of the action, for example, SELECT_ITEM
• The data: This ...